The previous flat data/rules/ flattened a real distinction:
- data/rules/modpack/ mirrors of upstream modpack-author-bundled
sorting_rules.txt (HellDrinx). Update when
upstream publishes; don't unilaterally edit.
- data/rules/curated/ sortof-operator-authored rules for individual
mods whose authors didn't declare load order
in their mod.info (RV Interior Expansion).
The loader stays provenance-agnostic; trigger values in _RULES_TRIGGERS
are paths relative to data/rules/ ("modpack/helldrinx.txt" etc.).
File headers in each rules file declare the provenance category and
edit policy.
